<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="文章标题" prop="title">
        <el-input v-model="queryParams.title" placeholder="请输入标题" clearable size="small"
          @keyup.enter.native="handleQuery" />
      </el-form-item>
      <el-form-item label="文章分类" prop="cid">
        <el-select v-model="queryParams.cid" placeholder="请选择分类" clearable size="small">
          <el-option v-for="category in categoryOptions" :key="category.id" :label="category.name"
            :value="category.id" />
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd"
          v-hasPermi="['iot:article:add']">新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="success" plain icon="el-icon-edit" size="mini" :disabled="single" @click="handleUpdate"
          v-hasPermi="['iot:article:edit']">修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="danger" plain icon="el-icon-delete" size="mini" :disabled="multiple" @click="handleDelete"
          v-hasPermi="['iot:article:remove']">删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button type="warning" plain icon="el-icon-download" size="mini" @click="handleExport"
          v-hasPermi="['iot:article:export']">导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="articleList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="ID" prop="id" width="80" align="center" />
      <el-table-column label="封面" align="center" prop="image" width="120">
        <template slot-scope="scope">
          <image-preview :src="scope.row.image" :width="100" :height="60" />
        </template>
      </el-table-column>
      <el-table-column label="标题" align="center" prop="title" :show-overflow-tooltip="true" />
      <el-table-column label="分类" align="center" prop="categoryName" /> <!-- 假设后端返回了 categoryName -->
      <el-table-column label="作者" align="center" prop="author" />
      <el-table-column label="浏览量" align="center" prop="visit" />
      <el-table-column label="排序" align="center" prop="sort" />
      <el-table-column label="是否显示" align="center" prop="isShow">
        <template slot-scope="scope">
          <el-switch v-model="scope.row.isShow" :active-value="1" :inactive-value="0"
            @change="handleStatusChange(scope.row)"></el-switch>
        </template>
      </el-table-column>
      <el-table-column label="创建时间" align="center" prop="createTime" width="160">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width" width="120">
        <template slot-scope="scope">
          <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)"
            v-hasPermi="['iot:article:edit']">修改</el-button>
          <el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)"
            v-hasPermi="['iot:article:remove']">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination v-show="total>0" :total="total" :page.sync="queryParams.pageNum" :limit.sync="queryParams.pageSize"
      @pagination="getList" />


    <el-dialog :title="title" :visible.sync="open" width="80%" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-row>
          <el-col :span="12">
            <el-form-item label="文章标题" prop="title">
              <el-input v-model="form.title" placeholder="请输入标题" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="文章分类" prop="cid">
              <el-select v-model="form.cid" placeholder="请选择分类">
                <el-option v-for="category in categoryOptions" :key="category.id" :label="category.name"
                  :value="category.id" />
              </el-select>
            </el-form-item>
          </el-col>
        </el-row>
        <el-row>
          <el-col :span="12">
            <el-form-item label="作者" prop="author">
              <el-input v-model="form.author" placeholder="请输入作者" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="排序" prop="sort">
              <el-input-number v-model="form.sort" controls-position="right" :min="0" />
            </el-form-item>
          </el-col>
        </el-row>
        <el-form-item label="文章封面" prop="image">
          <image-upload v-model="form.image" />
        </el-form-item>
        <el-form-item label="简介" prop="intro">
          <el-input v-model="form.intro" type="textarea" placeholder="请输入简介" />
        </el-form-item>
        <el-form-item label="摘要" prop="summary">
          <el-input v-model="form.summary" type="textarea" placeholder="请输入摘要" />
        </el-form-item>
        <el-form-item label="文章内容">
          <editor v-model="form.content" :min-height="300" />
        </el-form-item>
        <el-form-item label="是否显示" prop="isShow">
          <el-radio-group v-model="form.isShow">
            <el-radio :label="1">是</el-radio>
            <el-radio :label="0">否</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="浏览量" prop="visit">
          <el-input-number v-model="form.visit" controls-position="right" :min="0" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
  import {
    listArticle,
    getArticle,
    delArticle,
    addArticle,
    updateArticle
  } from "@/api/iot/article";
  import {
    listCategory
  } from "@/api/iot/articleCategory";
  import Editor from '@/components/Editor';
  import ImageUpload from '@/components/ImageUpload';
  export default {
    name: "Article",
    components: {
      Editor,
      ImageUpload
    },
    data() {
      return {
        // 遮罩层
        loading: true,
        // 选中数组
        ids: [],
        // 非单个禁用
        single: true,
        // 非多个禁用
        multiple: true,
        // 显示搜索条件
        showSearch: true,
        // 总条数
        total: 0,
        // 文章资讯表格数据
        articleList: [],
        // 弹出层标题
        title: "",
        // 是否显示弹出层
        open: false,
        // 查询参数
        queryParams: {
          pageNum: 1,
          pageSize: 10,
          cid: null,
          title: null,
        },
        // 表单参数
        form: {},
        // 表单校验
        rules: {
          title: [{
            required: true,
            message: "标题不能为空",
            trigger: "blur"
          }],
          cid: [{
            required: true,
            message: "文章分类不能为空",
            trigger: "change"
          }],
          image: [{
            required: true,
            message: "封面不能为空",
            trigger: "blur"
          }],
        }
      };
    },
    created() {
      this.getList();
    },
    methods: {
      /** 查询文章资讯列表 */
      getList() {
        this.loading = true;
        listArticle(this.queryParams).then(response => {
          this.articleList = response.rows.map(item => {
            if (item.createTime) item.createTime = item.createTime * 1000;
            return item;
          });
          this.total = response.total;
          this.loading = false;
        });
      },
      /** 获取所有文章分类 */
      getCategoryList() {
        listCategory().then(response => { // 调用分类列表API
          this.categoryOptions = response.rows;
        });
      },
      // 取消按钮
      cancel() {
        this.open = false;
        this.reset();
      },
      // 表单重置
      reset() {
        this.form = {
          id: null,
          cid: null,
          title: null,
          intro: null,
          summary: null,
          image: null,
          content: null,
          author: null,
          visit: 0,
          sort: 0,
          isShow: 1,
          isDelete: 0,
          createTime: null,
          updateTime: null,
          deleteTime: null
        };
        this.resetForm("form");
      },
      /** 状态修改 */
      handleStatusChange(row) {
        let text = row.isShow === 1 ? "显示" : "隐藏";
        this.$modal.confirm('确认要"' + text + '"文章《' + row.title + '》吗？').then(function() {
          return updateArticle({
            id: row.id,
            isShow: row.isShow
          });
        }).then(() => {
          this.$modal.msgSuccess(text + "成功");
        }).catch(function() {
          row.isShow = row.isShow === 0 ? 1 : 0;
        });
      },
      /** 搜索按钮操作 */
      handleQuery() {
        this.queryParams.pageNum = 1;
        this.getList();
      },
      /** 重置按钮操作 */
      resetQuery() {
        this.resetForm("queryForm");
        this.handleQuery();
      },
      // 多选框选中数据
      handleSelectionChange(selection) {
        this.ids = selection.map(item => item.id)
        this.single = selection.length !== 1
        this.multiple = !selection.length
      },
      /** 新增按钮操作 */
      handleAdd() {
        this.reset();
        this.open = true;
        this.title = "添加文章资讯";
      },
      /** 修改按钮操作 */
      handleUpdate(row) {
        this.reset();
        const id = row.id || this.ids
        getArticle(id).then(response => {
          this.form = response.data;
          this.open = true;
          this.title = "修改文章资讯";
        });
      },
      /** 提交按钮 */
      submitForm() {
        this.$refs["form"].validate(valid => {
          if (valid) {
            if (this.form.id != null) {
              updateArticle(this.form).then(response => {
                this.$modal.msgSuccess("修改成功");
                this.open = false;
                this.getList();
              });
            } else {
              addArticle(this.form).then(response => {
                this.$modal.msgSuccess("新增成功");
                this.open = false;
                this.getList();
              });
            }
          }
        });
      },
      /** 删除按钮操作 */
      handleDelete(row) {
        const ids = row.id || this.ids;
        this.$modal.confirm('是否确认删除文章资讯编号为"' + ids + '"的数据项？').then(function() {
          return delArticle(ids);
        }).then(() => {
          this.getList();
          this.$modal.msgSuccess("删除成功");
        }).catch(() => {});
      },
      /** 导出按钮操作 */
      handleExport() {
        this.download('iot/article/export', {
          ...this.queryParams
        }, `article_${new Date().getTime()}.xlsx`)
      }
    }
  };
</script>
